<template>
  <el-container class="home-container">
    <!--头部区域-->
    <el-header>
      <div>
        <img src="../assets/heima.png" alt="" />
        <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <!--页面主体区域-->
    <el-container>
      <!--侧边栏-->
      <el-aside :width="isCollapse ? '64px' :'200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <el-menu background-color="#333737" text-color="#fff" active-text-color="#409EFF" :unique-opened="true" :collapse="isCollapse" :collapse-transition="false" router :default-active="activePath">
          <!--一级菜单-->
          <el-submenu :index="item.id + ''"  v-for="item in menulist" :key="item.id">
            <!--一级菜单的模板区域-->
            <template slot="title">
              <!--图标-->
              <i :class="iconsObj[item.id]"></i>
              <!--文本-->
              <span>{{item.authName}}</span>
            </template>

            <!--二级菜单-->
            <el-menu-item :index="'/' + subItem.path"  v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/' + subItem.path)">
              <template slot="title">
              <!--图标-->
              <i class="el-icon-menu"></i>
              <!--文本-->
              <span>{{subItem.authName}}</span>
            </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <!--右侧内容主体-->
      <el-main>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>
<script>
export default {
  data(){
    return{
      menulist:[],
      iconsObj:{
        '125':'iconfont icon-user',
        '103':'iconfont icon-tijikongjian',
        '101':'iconfont icon-shangpin',
        '102':'iconfont icon-danju',
        '145':'iconfont icon-baobiao'
      },
      //是否折叠
      isCollapse:false,
      //被激活的链接地址
      activePath:''
    }
  },
  created() {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    logout() {
      //退出登录
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    async getMenuList() {
      const{data: res} = await this.$http.get('menus')
      if(res.meta.status !==200) return this.$message.error(res.meta.msg)
      this.menulist = res.data
      console.log(res)
    },
    //菜单折叠展开
    toggleCollapse(){
      this.isCollapse = !this.isCollapse
    },
    //保存连接的激活状态
    saveNavState(activePath){
      window.sessionStorage.setItem('activePath',activePath)
      this.activePath =activePath
    }
  }
}
</script>

<style lang="less" scoped>
.home-container {
  height: 100%;
}
.el-header {
  background-color: rgb(153, 232, 206);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: azure;
  font-size: 20px;
  > div {
    display: flex;
    align-items: center;
    span {
      margin-left: 15px;
    }
  }
}
.el-aside {
  background-color: #333737;  //菜单栏背景
  .el-menu {
    border-right: none;
  }
}
.el-main {
  background-color: rgba(171, 168, 164, 0.336);
}
.iconfont {
  margin-right: 10px;
}
.toggle-button {
  background-color: #4A5064;
  font-size: 10px;
  line-height: 24px;
  color:#fff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>